ShoreTel CEO John Combs has announced he is to leave the company after posting above guidance preliminary numbers for the quarter ended 30 June.
Claiming that it was the "right time" to allow a new CEO to drive the IP networking vendor to the "next level", Combs said: "I am leaving ShoreTel at a great time in its lifecycle. We are gaining market share, growing our revenue both in the US and internationally, expanding our distribution base and adding to our customer-focused employee base."
He will remain with the company while ShoreTel headhunts its next leader, and will serve out the remainder of his term on the board.
Combs, who has run ShoreTel since 2004, began his career at venerable US comms incumbent Bell, and did stints with Fujitsu Business Communications and ran Mitel's US business before spending several years with a succession of wireless start-ups in the 1990s.
ShoreTel's full quarterly results are due in mid-August, but initial figures show total sales of between $41m and $42m (£27.1m), representing 25% year-on-year growth.
The firm did not provide guidance on its profits, but said it expected non-GAAP gross margins to be an all-time record.